The Bulgarians, with German support, crossed the Greek frontier on 26 May 1916. The 10th Division was first sent into action in August along the Struma River valley, coming into action against the Bulgarians on 30 September in the 'Struma offensive', crossing the river and taking the village of Yeninkoi (present-day Provatos in Serres Prefecture, Greece) then after a Bulgarian counterattack retaking it, but at the cost of 500 men. Now well below strength, also due to the malaria in summer and lack of recruits, they remained in Provatos. The Division withstood further Bulgarian attacks in March 1917. In late summer the 10th was withdrawn to be re-engaged to stem the Turks in Palestine.